Multiple drilling-machine.



G. R. RICH.

MULTIPLE DRILLING MACHINE.

APPLICATION FILED JULY 24, 1905.

925508. 9 Patented June 22, 1909.

M 5 SHEETS-SHEET 1.

G. R. RICH.

MULTIPLE DRILLING' MACHINE. 4

APPLICATION FILED JULY 24, 1905.

Patented June 22, 1909.

6 SHEETS-SHEET Z.

G. R. RICH. v MULTIPLE DRILLING MACHINE.

LPPLIOATION FILED JULY 24, 1906. I v

, Ptented June 22,1909.

5 sums-sum. a.

IIIWW g I jmmnm ijJLiillulnliiluili I G. R. RICH.

MULTIPLE DRILLING MACHINE.

APPLICATION FILED JULY 24, 1905.

' Pa tented June 22, 1909.

'5 SHEETS-SHEET 4.

G. R. RICH. MULTIPLE DRILLING MACHINE. APPLIOATION FILED JULY 24, 1905.I '925,5Q8 Patented June 22, 1909.

B SHEBTB-SHEET 5,

UNITED STATES PATENT oFFIon GEORGE It; RICH, or BUCHANAN, MICHIGAN,ASSIGNOR TO CELFOR TOOL COMPANY, A

c o CORPORATION OF ILLINOIS.

, MULTIPLE nRILiING-MAcnmn.

Specification of Letters Patent. Application filed July 24, 1906. SerialNo. 271,095.

Patented June '22, 1909.

.citizen of the United States, residing at Buchanan, in: the. countyofBerrien and State of Michigan, have invented certain new and 'usefulImprovements in Multiple Drilling-I Machines, 'of which the followingis, iication, reference being had to the panying drawings.

My invention relates to multiple drillingmachines, and it hasparticularly for its object to provide a new and improved machinesuitable for use in drilling holes simultaneously in different parts ofarCh-barsfor cartrucks, or similar articles, although, many featuresthereof may be embodied'in various other forms of drilling-machinesbesides that illustrated in the drawings and hereinafter described. Inthe accompanying drawings I have illustrated various features of myinvention embodied in an arch-bar drill-press arranged and operating todrill simultaneously two holes at-opposite sides of the center of thearch and also two holes in the end ortions ofthe arch-bar. Each hole isdrled by a drill niounted in a separate spindle or chuck,'.the differentspindles being so supported as to be independently adjustable toward andfrom each other, as well as toward a. speciaccomsimultaneously from acommon source of power,all being connected-with the same drive-shaft.The work is carried on avertically-movable table provided withhandoperated mechanism for moving it rapidly; toward and from thedrills, and with automatic power-driven mechanism for feedin the worktoward the drills during the actual operation of drilling. The latter isautomatically thrown out of operation upon the com pletion of thedrilling operation. The mechanism for controlling the feed is placed infront of the feed-table so as to be readily accessible to the operator.The drivingmechanism also actuates a pumparranged to throw water uponthe drills during the drilling operation,the water'flowing from thedrills back to the pump, so .that the'same water is used repeatedly. Inthe drill-press illustrated I have also shown a number of otherimprovements relating to the construction and operation ofthemachine,all of which are fully hereinafter described and pointed out.

.What I regard as forth in the claims.

In the drawings,Figure 1 is a front view patentably new is set elevationthereof Fig. 3'is a vertio'al'section online 3-3 of Fig. -1; Fig. 4 is aplan view; Fig.5 is a horizontal section on line 5 -5 of Fig. 1; Fig. 6is a horizontal section on line 6,6 of-Fig. 1; Fig. 7 is an enlargedcross section on line 77 of Fig. 6; Fig. 8 is an em larged partialvertical section through the upper portion of the frameand some of theparts carried, thereby, as, for. example, on ine 8-8 of F'g. 4; Fig. 9tea partial horizontal section on line 9-9 of Fig. 1; Fig. 10 is anenlarged partial vertical 1010 of Fig. 1; Fig. 11 is a artial horizontalsection on line 1111 of Fig. 10; Fig. 12 is an enlarged vertical sectiononline 12-12 of Fig. 1; Fig. 13 is a perspective view, illustrating a.art of the upper portion of the frame; an on line 1414 of Fig. 3.

Referring to the drawings,20 indicates shape and so constructed as tosupport the necessary parts. As shown in Figs. 4 and 5, the base isoblong,being, in the apparatus illustrated, about four times as long asit is wide. Theseproportions may, of course, be varied as may bedesired.

of, as best shown in Figs. 1, 4 and 5. Said standards not only serve inpart as guides for the feed-table, but also support various other afterdescribed. v I

' 23 indicates a well or basin placed near one as shown in Fig. 5, toreceive the Waterfalling upon theutpper surface of the base, 'the saidupper sur that end, as shown at 24 in 1g. 3.

The front edge25 of the base projects a ward beyond the intermediateportion. of t e surface of the base, as shown in Fig.3, so as to preventoverflow.

26 indicates a pump connected by -a pipe 27 with the basin 23 forpumping Water therefrom and forcingiit to the drills, as hereinafterdescribed.

28 indicates a plate or frame arranged at the back of the press andextending between of my improved drill press; Fig. 2 is an end sectionon line-- Fig. 14 is a partial sectional view 21-22 indicate uprights orstandards rig idly secured to the base near the ends thereend of thebase, preferably'thelefthand end,

the base of the press, which-is of suitable parts ofthe mechanism, aswill be hereinace being-pro erly pitched to the standards 21-22, towhich its'ends are fixedly secured. For convenience, said plate will betermed, the back platef. plate, together with the standards and base,

ppse the frame of the mamay be said to com chine;-but it will eunderstood that the frame may be'otherwise made up,it being essentialonly that it be of proper strength.

and proportions to support theworking parts ject of said groove is tosecure and guidethe' upper portions of thediiferent spindle-supportingframes. 32-33 indicate similar grooves at the end portions of the back--plate 28 near the lower margin thereof; and

34 indicates a similar groove intermediately disposed near the lowermargin of said backplate, as shown in Fig. 1. The grooves 32,

33 and 34 are to su port and guide the lower.

ortions of the di erent spindle-supporting rames.

A, 13,, C, D, E, F indicate a series of drillingdevices, which are allalike and are similarly mounted on-the back-plate 28. They are alsosimilarly driven, so that it will bernecessar' to describe in detail theconstruction and connections of a single one only,it-be ing understoodthat the same reference numerals are applied to corresponding parts. ofeachof said drilling-devices. As bestshown in Fig. 1, there are a seriesof spindle-supporting frames 35 vertically disposed upon the front sideof theback-plate 28,-said frames being secured thereto at their u perends by-bolts 36 having heads 37 which .t in

the groove 29, as best shown in Fig. 8. :Similar bolts are provided forengaging the grooves 32, 33 and 34 to secure the lower end portions ofthe frames 35 in position. Obviously, by loosenin the nuts 38, theframes 35 maybe shifted ongitudinally upon the back-plate 28 andbroughtto the desired position. As also shownin Fig. -8, the frames 35 areprovided at their upper ends with flanges 39 which extend over the upperedge of the back-plate 28 and further support said frames.

40 indicates the housings or cylinders of the different spindles, eachof which, as best shown in Fig. 9, is rovided at the back with aslide-plate 41 aapted to fit against and slide vertically upon the frame35. The slide-plates 41 are held in position by overlap ing guide-strips42 secured longitudinal y on the frame 35 at opposite margins thereof,as shown in Figs. 1 8 and 9. Bolts 43 are provided for securing the stri)S 42 in position. The arrangement is such t at said strips may becaused tobind tightly upon the Said 'slide'lat.e 41 by tightening thebolts 21 there y clamping the slide-pl to and spindle cylinder fixedlyin position. By this means the spindle may readily be moved verticallyand secured in different positions of adjustment, and the'i'operativeheight of the drill carried thereby varied. Eac provided with aforwardly-proj eating handle 44 by which it may bemore readily moved.

45 indicates. the spindles, which carry drills 46 projecting beyond thelower ends of the cylinders 40, as shown in Fig. 1. The s indles 45 maybe provided with any suitable mechanism for securing the drills in'osition and causing them to rotate, but I pre erablyemploy theconstruction illustrated and described in my pendingapplication, SerialNumber 265,679, filedJune 17, 1905; and the drill ispreferably also ofthe type described in my said ap lication, being of blue-chip steel ofuni orm cross section throughout its length and being provided Withlongitudinal ribs extending along its opposite sides, as'indicatedin'the drawings. The spindle is connected with driving-mechanism,hereinafter described, by means of a sleeve 47 which may be an integralart of the spindle and fits upon a vertical s aft 48 havinga feather 49,as shownin Fig. 2, so that said sleeve may move longitudinally thereofand nevertheless rotates in unison therewith. 50 indicates a sleevesecured at the upper portion of theframe 35 and forming a bearing forthe upper end of the shaft 48. The lower end of-the shaft 48 is heldproperly in position by the sleeve47 and spindle cylinder 40. The shaft48 is driven by means of a bevsled-gear 51 mounted on its upper end andmeshing with a beveled-gear 52 mounted on.

a feathered-shaft 53, the ends of which are journaled in the standards2122, as shown in Fig. 1. .The gear 52.is feathered on the shaft 53sothat it may be adjusted to different positions thereupon. At one endthe shaft 53 carries a gear 54 which meshes with a pinionf55 mounted ona shaft-56,- best shown in Fig. 2, which carries acone-pulley 57. Bythis means the shaft 53 may be At the oppositedriven at various speeds.end the shaft 53 carries a beveled-pinion 58,

-as bestshown in Fig. 1, through which it is operated, as willbehereinafter described.

The spindle-*cylinder 40 and spindle are counterbalanced byacounterbalance-Weight 59 carried by a chain 60 which runs over a pulley61 and is connected by a hook 62, or other suitable means, with thecylinder 40, as shown in Fig. 3; The pulley 61 is carried in a frame 63,which projects from the upper portion of the frame 35, as shown in Fig.3. The pulley 61 may, however, be carried in any other suitable way soas to move with the frame 35 when the latter is adjusted. In

cylinder 40 is ord'erto' cause 'the gear" 52 to'move with the! "frame35, when thela'tter is adjusted, sai gear is provided with a sleeve 64having an, annular flange 65' at its outer end,- as shown SinFig. 14,and 'their'ame 63 is" arranged to embrace said sleeve, as "is alsoshownin Fig; 14. Consequently, when anyone of the I frames 35 isadjusted longitudinally-of the machine the gear 52 and thecounterbalanc-i ing nr1echanismmove with it. 5 '66 indicates. thefe'ed-table, which, as "shown in Fig. 1,;- extends longitudinally of themachine near the lower portion thereof;

*its ends being'fittedbetwe'en suitable guides n on thebase'20,fas=lfest'sh'ownin'FigJ .12. I he supports 72 are provided with intermediatescrew-threaded portions to receive the threads of the-screws 71 ,and attheir lower 'ends are provided with oil-cups 73, into "which the lowerends 'of the screws project. At their upperends the screws 71areprovided with eveled gears 74, the under surfaces of which are. providedwith annular bearings 75 which rest on antifriction-balls 76 carriediatthe uppe'r'endsiof the supports 72. 'The ears 74 are connected by ashaft 77, WhlCll'lS fitted in suitable be'arin -blocks 7879 .near theends of the feed-ta 1e and carries beveled gears 80 In'eshing'with thebeveled gears 74, as shown in Fig. 6. 0bviously by'rotating the shaft77,- both gears 77 and screws 71 are rotated; The arrangement is suchthat both screws are similarly operated,'that is to say, both rise ordescend simultaneously. If desired, one of the "screws 71 may be maderight hand and the other left hand so that they may be rotated inopposite directions simultaneously,i'n'which case the gears 80 arearranged as shown in Fig. 6 or the gears may be arranged to rotate thescrews in the same direction,'-in which case similar screws would'beemployed.

81 indicates a beveled-gear mounted on the-shaft 77' and meshing with abeveled-gear 82 mounted on a stub-shaft 83 which projects from-the frontof the feed-table, as shown in Fig. 6, and carries a hand wheel 84 bywhich it may be rotated. By this means the shaft 77 may be rotated byhand to raise or lower the feed-table. Y In order to operate thefeedtable by power I provide'the shaft 77 with a pinion 85, whichisadapted to mesh with a pinion" 86=mounted upon a shaft 87 whichprojects through one end of the feed-table and through a slot in thestandard 22, as

'The arrangement is such that -Sl'lOWll in Fig1 6. Thejinner end ofthe-shaft l I 87 is fittedin a suitableib aring'ss provided c. inone'arm'89 of a bell cr'ank lever 89,'the

other arm "90 iofwhich projects throu h' an o enin '91 infront of theeed-tab e,- as s own 1n Figs' 6 and 7'. As shown in Fig. 7, said leveris pivoted in a suitable bracket 92, so that by lifting the arm 90 theshaft 87 and. 1

pinion 86 are thrown over-toward the pinion '85. By this means thepinion"86 may be moved into or out of engagement with the pinion byoperating the arm 'of the bellcrank lever. In practice, the ar'm1'90 'israised by hand, butit is held in its raised position by a latch 93having an upright arm so '94 and a horizontal arm 95, as shown in Fig.

l 1. The arm 94 of said latch is (provided with a lug 96 adapted toproject un er the arm 90 to holdit-in its raised position. The arm "ofsaid latch projects over an arm 97 of a trip- 35 lever 98, the oppositearm 99 of which is adapted-to engage an adjustable stop 100 carried bythe standard 21. The stop 100 may be secured in different positions ofadjustment by a bolt 101-, as s own in Fig. 1. 0

when the arm 99 of the trip-lever strikes the stop 100 the arm 97 ofsaid trip-lever is thrown-upward, thereby lifting the'arm 95 of thelatch 93 and throwing the-arm 94 away from the arm 90 '95 'of thebell-crank lever which is released and permitted to drop, therebythrowing the pin- 10H 86 out of engagement with the pinion 85.

The result is that the shaft 87 is. automatically disconnected from theshaft 77 stop- 100 ping thefeed-table.

This, however, does not'interfere with the movement of the feedtable bymeans of the hand-wheel 84, as will be apparent. I

The shaft 87'is driven from the shaft 53 by means of a vertical shaft102, which, at its upper end, is provided with a beveled-pinion 103meshing with the inion 58, and at its lower end carries a pinion104which meshes with a pinion 105 carried by the shaft 87.

The P1111011 104 is mounted on a feather 106 on the shaft 102, so thatit may be moved longitudinally thereof, and it is held in engagementwith the pinion 105 by a yoke 107,

as shown in Fig.- 1. The shaft 87 is, therefore, constantly rotated, butit does not drive the shaft 77 except when the pinions 85 and 86 are inmesh. It will be noted that the parts are so arranged that when drivenby V ower the hand-mechanism for moving the i 'eed table is gearedconsiderably higher, than the power mechanism,as it is desirable thatthe feed-table may be moved faster whenmoved by hand than when driven bypower.

The feed-table also is provided with suitable counterbalancing weights108 placed near its opposite ends and connected by chains 109 withpulleys 1'10-mounted in the standards 21-22, respectively, as shown in.130

Fig. 10. In order to givethe-said weights greater leverage, and therebymake it practicable to use smaller weights, the ends of the feed-tableare connected with'the pulleys 110 by means of chains 111 which connectwith 21111163 8112 of considerably less diameter fan the pulleys 11-0,but mounted on the 110, as shown in Figs. 10 and 11. -The lower ends ofthe chains 111 are connected in any suitable way with-the ends of thefeed-table. 114 indicates idler-pulleysfor guidingthe chains 111. r a I115-116 indicate clamps carried by the feed-table near the ends thereoffor clamping the ends of the work thereto, as shown in Figs. 1 and 5.Said. clamps are provided withcams 117 by which the work is clampedtightly against lugs 118, as shown in Fig, 5.

At its center the feed-table 66 carries a verti-l cally-adjustablecentral clampfand worksupport 119, which is mounted on a screw threadedstem or standard 120, as shown in Figs. 1 and3. The stem' 120 carriesa-nut- 121 by adjusting which the height of the clamp 119 may be varied.Said clamp also carries cams 122 by which the work-may be "clampedagainst a lug 123, as shown in Fig. 3. V 124 indicates avertically-disposed guideplate, which is formed integral with the rearportion of the center-support 119 and. ex-

; tendsabove and below the same, as shown in Fig. '3. The upper end ofsaid guide-platter bears againstthe rear surface of the backplate 28,and its lower end bears against the rear face of the feed-table 66, asshown in said Fig. 3. i S'aid guide-plate therefore not only serves tokeep thecenter-support 1 19 steady,

' 127 indicated by dotted'lines in Fig. 1.

The operation is as follows :-The several spindles are set at the properdistances apart I For drilling arch-bars they are set as illustrated inFig. 1.

and at the proper heights.

The center sup ort 119 is also elevated correspondingly. en in properposition the difierent spihdle-cylinders 40 are/secured fixedly inlgosition by tightening the bolts 43. The arch aris then put in positionand secured by the. clamping-devices 115, 116 and 119. At this time thefeed-table is in its lowermostposition. -The stop/100 is set at theproper height to trip the automatic feedmechanism upon the completion ofthe boring operation. All being in readiness, the hand-wheel 84 is thenrotated to elevate the same shafts 113,..which-carrysaid pulleys holder.

feed-table rapidly until the arch-bait; is in roximity to the drills.The arm QOjbf the Y ell-crank lever 89 a is then lifted into enga ementwith'the lug 96, thereby throwingt e automatic or power feedingmechanism mto o eration. The arch bar. is thereby fed.

s owly up against .the drills until the drilling operation iscompleted,when the lever 98 is actuated by the stop 100 to trip the arm 90 andthrow 'theautomatic feed out of operation. It will be understood thatwhen the arm 90 of the bell-crank lever-89 is released the weight ofsaid arm 90 suffices to throw the shaft 87 far enough away from theshaft 77 to disengage the pinions-85-86. The

feed-table comes to a stop as soon a'ssaid pin-' ions are disengaged andmay be returned to its former position by reversely rotating thehand-wheel 84. It WillzbBilOtGd that all the holes are drilledsimultaneously, and as each of the drills is fixedlysecured; in itsproper position the different holes are drilled with the utmostaccuracy. z

It is apparent that. any desired number of spindles may be em loyed, andthey may be disposed so as to dr' lholes atany desired intervals, or ata'v'ariety'of heights above the feed-table, so that the machine has awide ran e of usefulness; particularly so, .in view of t e fact. thatthe various adjustmentsof 3 which the drills are capable may be quickly4 and accurately made without the exercise of any considerable amount ofskill.

a While I have describedmy improved drillre s with a considerable degreeof particuarity, I wish it to be understood that 1n doing so I have notintended to restrict myself to the s ecific features "of constructionillus-' .trate and described, except in so far as they are articularlyclaimed,it bein my intention to claim generically the sub ect-matter ofthe broader claims. r

While the spindlesshown are illustrated and described as beingintended-for use inholding drills, s indles for holding other toolsmaybe use in the same Way, and the term drill as used in the claims is usedin a generic sense to comprehend any drill or other toolused in aspindle, or equivalent That which I claim-as my invention and desire tosecure by Letters Patent is,

. 1. A machine-tool, comprisinga machineframe, a spindle carriedthereby, a verticallymov able feed-table, end-guides-for said feedtable,carried by said frame, and an intermediate guide carried by said.feed-table and bearing against the. back of said machineframe. i.

v 2. A machine-tool, com rising a machine frame, a vertically-movablefeed-table, endguides'for said feed-table, a vertically-adjustablework-supporting clamp carried by said feed-table, and a rigidguide-plate consaid feed-table and the back of the machine frame.

3. A machine-tool, com nsmg a machineframe, a vertically-movab efeed-table, endguides for said feedtable, a Vertically-adjustablework-supporting clamp carried by said feed-table, and a guide-plateconnected with said clamp and extending above and below the same, theupper ortionof said guide-plate bearing against t e back of themachine-frame and the lower end portion thereof bearing against thefeed-table.

4. A machine-tool, comprising a machineframe, a 1eed-table, awork-supportmounted 15 on said feed-table and ad'ustable verticallyindependently thereof, an a guide connected with said work-support,saidjguide projecting above and below said work-support, the

upper end ofsaid guide having a bearing 20 against the machine-frame andthe lower end thereof having a bearing against said feed-table.

GEORGE R. RICH.

Witnesses:

J. P. .WARDER, O. PAULSON.

